src/common/docview.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/common/docview.cpp
   3 // Purpose:     Document/view classes
   4 // Author:      Julian Smart
   5 // Modified by: Vadim Zeitlin
   6 // Created:     01/02/97
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24     #pragma hdrstop
  25 #endif
  26
  27 #if wxUSE_DOC_VIEW_ARCHITECTURE
  28
  29 #include "wx/docview.h"
  30
  31 #ifndef WX_PRECOMP
  32     #include "wx/list.h"
  33     #include "wx/string.h"
  34     #include "wx/utils.h"
  35     #include "wx/app.h"
  36     #include "wx/dc.h"
  37     #include "wx/dialog.h"
  38     #include "wx/menu.h"
  39     #include "wx/filedlg.h"
  40     #include "wx/intl.h"
  41     #include "wx/log.h"
  42     #include "wx/msgdlg.h"
  43     #include "wx/mdi.h"
  44     #include "wx/choicdlg.h"
  45 #endif
  46
  47 #if wxUSE_PRINTING_ARCHITECTURE
  48     #include "wx/prntbase.h"
  49     #include "wx/printdlg.h"
  50 #endif
  51
  52 #include "wx/confbase.h"
  53 #include "wx/filename.h"
  54 #include "wx/file.h"
  55 #include "wx/ffile.h"
  56 #include "wx/cmdproc.h"
  57 #include "wx/tokenzr.h"
  58 #include "wx/filename.h"
  59 #include "wx/stdpaths.h"
  60 #include "wx/vector.h"
  61 #include "wx/scopedarray.h"
  62 #include "wx/scopedptr.h"
  63
  64 #if wxUSE_STD_IOSTREAM
  65     #include "wx/ioswrap.h"
  66     #include "wx/beforestd.h"
  67     #if wxUSE_IOSTREAMH
  68         #include <fstream.h>
  69     #else
  70         #include <fstream>
  71     #endif
  72     #include "wx/afterstd.h"
  73 #else
  74     #include "wx/wfstream.h"
  75 #endif
  76
  77 typedef wxVector<wxDocTemplate *> wxDocTemplates;
  78
  79 // ----------------------------------------------------------------------------
  80 // wxWidgets macros
  81 // ----------------------------------------------------------------------------
  82
  83 IMPLEMENT_ABSTRACT_CLASS(wxDocument, wxEvtHandler)
  84 IMPLEMENT_ABSTRACT_CLASS(wxView, wxEvtHandler)
  85 IMPLEMENT_ABSTRACT_CLASS(wxDocTemplate, wxObject)
  86 IMPLEMENT_DYNAMIC_CLASS(wxDocManager, wxEvtHandler)
  87 IMPLEMENT_CLASS(wxDocChildFrame, wxFrame)
  88 IMPLEMENT_CLASS(wxDocParentFrame, wxFrame)
  89
  90 #if wxUSE_PRINTING_ARCHITECTURE
  91     IMPLEMENT_DYNAMIC_CLASS(wxDocPrintout, wxPrintout)
  92 #endif
  93
  94 IMPLEMENT_DYNAMIC_CLASS(wxFileHistory, wxObject)
  95
  96 // ============================================================================
  97 // implementation
  98 // ============================================================================
  99
 100 // ----------------------------------------------------------------------------
 101 // private helpers
 102 // ----------------------------------------------------------------------------
 103
 104 namespace
 105 {
 106
 107 wxWindow *wxFindSuitableParent()
 108 {
 109     wxWindow * const win = wxGetTopLevelParent(wxWindow::FindFocus());
 110
 111     return win ? win : wxTheApp->GetTopWindow();
 112 }
 113
 114 wxString FindExtension(const wxString& path)
 115 {
 116     wxString ext;
 117     wxFileName::SplitPath(path, NULL, NULL, &ext);
 118
 119     // VZ: extensions are considered not case sensitive - is this really a good
 120     //     idea?
 121     return ext.MakeLower();
 122 }
 123
 124 // return the string used for the MRU list items in the menu
 125 //
 126 // NB: the index n is 0-based, as usual, but the strings start from 1
 127 wxString GetMRUEntryLabel(int n, const wxString& path)
 128 {
 129     // we need to quote '&' characters which are used for mnemonics
 130     wxString pathInMenu(path);
 131     pathInMenu.Replace("&", "&&");
 132
 133     return wxString::Format("&%d %s", n + 1, pathInMenu);
 134 }
 135
 136 } // anonymous namespace
 137
 138 // ----------------------------------------------------------------------------
 139 // Definition of wxDocument
 140 // ----------------------------------------------------------------------------
 141
 142 wxDocument::wxDocument(wxDocument *parent)
 143 {
 144     m_documentModified = false;
 145     m_documentParent = parent;
 146     m_documentTemplate = NULL;
 147     m_commandProcessor = NULL;
 148     m_savedYet = false;
 149 }
 150
 151 bool wxDocument::DeleteContents()
 152 {
 153     return true;
 154 }
 155
 156 wxDocument::~wxDocument()
 157 {
 158     DeleteContents();
 159
 160     delete m_commandProcessor;
 161
 162     if (GetDocumentManager())
 163         GetDocumentManager()->RemoveDocument(this);
 164
 165     // Not safe to do here, since it'll invoke virtual view functions
 166     // expecting to see valid derived objects: and by the time we get here,
 167     // we've called destructors higher up.
 168     //DeleteAllViews();
 169 }
 170
 171 bool wxDocument::Close()
 172 {
 173     if ( !OnSaveModified() )
 174         return false;
 175
 176     return OnCloseDocument();
 177 }
 178
 179 bool wxDocument::OnCloseDocument()
 180 {
 181     // Tell all views that we're about to close
 182     NotifyClosing();
 183     DeleteContents();
 184     Modify(false);
 185     return true;
 186 }
 187
 188 // Note that this implicitly deletes the document when the last view is
 189 // deleted.
 190 bool wxDocument::DeleteAllViews()
 191 {
 192     wxDocManager* manager = GetDocumentManager();
 193
 194     // first check if all views agree to be closed
 195     const wxList::iterator end = m_documentViews.end();
 196     for ( wxList::iterator i = m_documentViews.begin(); i != end; ++i )
 197     {
 198         wxView *view = (wxView *)*i;
 199         if ( !view->Close() )
 200             return false;
 201     }
 202
 203     // all views agreed to close, now do close them
 204     if ( m_documentViews.empty() )
 205     {
 206         // normally the document would be implicitly deleted when the last view
 207         // is, but if don't have any views, do it here instead
 208         if ( manager && manager->GetDocuments().Member(this) )
 209             delete this;
 210     }
 211     else // have views
 212     {
 213         // as we delete elements we iterate over, don't use the usual "from
 214         // begin to end" loop
 215         for ( ;; )
 216         {
 217             wxView *view = (wxView *)*m_documentViews.begin();
 218
 219             bool isLastOne = m_documentViews.size() == 1;
 220
 221             // this always deletes the node implicitly and if this is the last
 222             // view also deletes this object itself (also implicitly, great),
 223             // so we can't test for m_documentViews.empty() after calling this!
 224             delete view;
 225
 226             if ( isLastOne )
 227                 break;
 228         }
 229     }
 230
 231     return true;
 232 }
 233
 234 wxView *wxDocument::GetFirstView() const
 235 {
 236     if ( m_documentViews.empty() )
 237         return NULL;
 238
 239     return static_cast<wxView *>(m_documentViews.GetFirst()->GetData());
 240 }
 241
 242 wxDocManager *wxDocument::GetDocumentManager() const
 243 {
 244     return m_documentTemplate ? m_documentTemplate->GetDocumentManager() : NULL;
 245 }
 246
 247 bool wxDocument::OnNewDocument()
 248 {
 249     // notice that there is no need to neither reset nor even check the
 250     // modified flag here as the document itself is a new object (this is only
 251     // called from CreateDocument()) and so it shouldn't be saved anyhow even
 252     // if it is modified -- this could happen if the user code creates
 253     // documents pre-filled with some user-entered (and which hence must not be
 254     // lost) information
 255
 256     SetDocumentSaved(false);
 257
 258     const wxString name = GetDocumentManager()->MakeNewDocumentName();
 259     SetTitle(name);
 260     SetFilename(name, true);
 261
 262     return true;
 263 }
 264
 265 bool wxDocument::Save()
 266 {
 267     if ( AlreadySaved() )
 268         return true;
 269
 270     if ( m_documentFile.empty() || !m_savedYet )
 271         return SaveAs();
 272
 273     return OnSaveDocument(m_documentFile);
 274 }
 275
 276 bool wxDocument::SaveAs()
 277 {
 278     wxDocTemplate *docTemplate = GetDocumentTemplate();
 279     if (!docTemplate)
 280         return false;
 281
 282 #ifdef wxHAS_MULTIPLE_FILEDLG_FILTERS
 283     wxString filter = docTemplate->GetDescription() + wxT(" (") +
 284         docTemplate->GetFileFilter() + wxT(")|") +
 285         docTemplate->GetFileFilter();
 286
 287     // Now see if there are some other template with identical view and document
 288     // classes, whose filters may also be used.
 289     if (docTemplate->GetViewClassInfo() && docTemplate->GetDocClassInfo())
 290     {
 291         wxList::compatibility_iterator
 292             node = docTemplate->GetDocumentManager()->GetTemplates().GetFirst();
 293         while (node)
 294         {
 295             wxDocTemplate *t = (wxDocTemplate*) node->GetData();
 296
 297             if (t->IsVisible() && t != docTemplate &&
 298                 t->GetViewClassInfo() == docTemplate->GetViewClassInfo() &&
 299                 t->GetDocClassInfo() == docTemplate->GetDocClassInfo())
 300             {
 301                 // add a '|' to separate this filter from the previous one
 302                 if ( !filter.empty() )
 303                     filter << wxT('|');
 304
 305                 filter << t->GetDescription()
 306                        << wxT(" (") << t->GetFileFilter() << wxT(") |")
 307                        << t->GetFileFilter();
 308             }
 309
 310             node = node->GetNext();
 311         }
 312     }
 313 #else
 314     wxString filter = docTemplate->GetFileFilter() ;
 315 #endif
 316
 317     wxString defaultDir = docTemplate->GetDirectory();
 318     if ( defaultDir.empty() )
 319     {
 320         defaultDir = wxPathOnly(GetFilename());
 321         if ( defaultDir.empty() )
 322             defaultDir = GetDocumentManager()->GetLastDirectory();
 323     }
 324
 325     wxString fileName = wxFileSelector(_("Save As"),
 326             defaultDir,
 327             wxFileNameFromPath(GetFilename()),
 328             docTemplate->GetDefaultExtension(),
 329             filter,
 330             wxFD_SAVE | wxFD_OVERWRITE_PROMPT,
 331             GetDocumentWindow());
 332
 333     if (fileName.empty())
 334         return false; // cancelled by user
 335
 336     wxString ext;
 337     wxFileName::SplitPath(fileName, NULL, NULL, &ext);
 338
 339     if (ext.empty())
 340     {
 341         fileName += wxT(".");
 342         fileName += docTemplate->GetDefaultExtension();
 343     }
 344
 345     // Files that were not saved correctly are not added to the FileHistory.
 346     if (!OnSaveDocument(fileName))
 347         return false;
 348
 349     SetTitle(wxFileNameFromPath(fileName));
 350     SetFilename(fileName, true);    // will call OnChangeFileName automatically
 351
 352    // A file that doesn't use the default extension of its document template
 353    // cannot be opened via the FileHistory, so we do not add it.
 354    if (docTemplate->FileMatchesTemplate(fileName))
 355    {
 356        GetDocumentManager()->AddFileToHistory(fileName);
 357    }
 358    //else: the user will probably not be able to open the file again, so we
 359    //      could warn about the wrong file-extension here
 360
 361    return true;
 362 }
 363
 364 bool wxDocument::OnSaveDocument(const wxString& file)
 365 {
 366     if ( !file )
 367         return false;
 368
 369     if ( !DoSaveDocument(file) )
 370         return false;
 371
 372     Modify(false);
 373     SetFilename(file);
 374     SetDocumentSaved(true);
 375 #if defined( __WXOSX_MAC__ ) && wxOSX_USE_CARBON
 376     wxFileName fn(file) ;
 377     fn.MacSetDefaultTypeAndCreator() ;
 378 #endif
 379     return true;
 380 }
 381
 382 bool wxDocument::OnOpenDocument(const wxString& file)
 383 {
 384     // notice that there is no need to check the modified flag here for the
 385     // reasons explained in OnNewDocument()
 386
 387     if ( !DoOpenDocument(file) )
 388         return false;
 389
 390     SetFilename(file, true);
 391
 392     // stretching the logic a little this does make sense because the document
 393     // had been saved into the file we just loaded it from, it just could have
 394     // happened during a previous program execution, it's just that the name of
 395     // this method is a bit unfortunate, it should probably have been called
 396     // HasAssociatedFileName()
 397     SetDocumentSaved(true);
 398
 399     UpdateAllViews();
 400
 401     return true;
 402 }
 403
 404 #if wxUSE_STD_IOSTREAM
 405 wxSTD istream& wxDocument::LoadObject(wxSTD istream& stream)
 406 #else
 407 wxInputStream& wxDocument::LoadObject(wxInputStream& stream)
 408 #endif
 409 {
 410     return stream;
 411 }
 412
 413 #if wxUSE_STD_IOSTREAM
 414 wxSTD ostream& wxDocument::SaveObject(wxSTD ostream& stream)
 415 #else
 416 wxOutputStream& wxDocument::SaveObject(wxOutputStream& stream)
 417 #endif
 418 {
 419     return stream;
 420 }
 421
 422 bool wxDocument::Revert()
 423 {
 424     return false;
 425 }
 426
 427
 428 // Get title, or filename if no title, else unnamed
 429 #if WXWIN_COMPATIBILITY_2_8
 430 bool wxDocument::GetPrintableName(wxString& buf) const
 431 {
 432     // this function can not only be overridden by the user code but also
 433     // called by it so we need to ensure that we return the same thing as
 434     // GetUserReadableName() but we can't call it because this would result in
 435     // an infinite recursion, hence we use the helper DoGetUserReadableName()
 436     buf = DoGetUserReadableName();
 437
 438     return true;
 439 }
 440 #endif // WXWIN_COMPATIBILITY_2_8
 441
 442 wxString wxDocument::GetUserReadableName() const
 443 {
 444 #if WXWIN_COMPATIBILITY_2_8
 445     // we need to call the old virtual function to ensure that the overridden
 446     // version of it is still called
 447     wxString name;
 448     if ( GetPrintableName(name) )
 449         return name;
 450 #endif // WXWIN_COMPATIBILITY_2_8
 451
 452     return DoGetUserReadableName();
 453 }
 454
 455 wxString wxDocument::DoGetUserReadableName() const
 456 {
 457     if ( !m_documentTitle.empty() )
 458         return m_documentTitle;
 459
 460     if ( !m_documentFile.empty() )
 461         return wxFileNameFromPath(m_documentFile);
 462
 463     return _("unnamed");
 464 }
 465
 466 wxWindow *wxDocument::GetDocumentWindow() const
 467 {
 468     wxView * const view = GetFirstView();
 469
 470     return view ? view->GetFrame() : wxTheApp->GetTopWindow();
 471 }
 472
 473 wxCommandProcessor *wxDocument::OnCreateCommandProcessor()
 474 {
 475     return new wxCommandProcessor;
 476 }
 477
 478 // true if safe to close
 479 bool wxDocument::OnSaveModified()
 480 {
 481     if ( IsModified() )
 482     {
 483         switch ( wxMessageBox
 484                  (
 485                     wxString::Format
 486                     (
 487                      _("Do you want to save changes to %s?"),
 488                      GetUserReadableName()
 489                     ),
 490                     wxTheApp->GetAppDisplayName(),
 491                     wxYES_NO | wxCANCEL | wxICON_QUESTION | wxCENTRE,
 492                     wxFindSuitableParent()
 493                  ) )
 494         {
 495             case wxNO:
 496                 Modify(false);
 497                 break;
 498
 499             case wxYES:
 500                 return Save();
 501
 502             case wxCANCEL:
 503                 return false;
 504         }
 505     }
 506
 507     return true;
 508 }
 509
 510 bool wxDocument::Draw(wxDC& WXUNUSED(context))
 511 {
 512     return true;
 513 }
 514
 515 bool wxDocument::AddView(wxView *view)
 516 {
 517     if ( !m_documentViews.Member(view) )
 518     {
 519         m_documentViews.Append(view);
 520         OnChangedViewList();
 521     }
 522     return true;
 523 }
 524
 525 bool wxDocument::RemoveView(wxView *view)
 526 {
 527     (void)m_documentViews.DeleteObject(view);
 528     OnChangedViewList();
 529     return true;
 530 }
 531
 532 bool wxDocument::OnCreate(const wxString& WXUNUSED(path), long flags)
 533 {
 534     return GetDocumentTemplate()->CreateView(this, flags) != NULL;
 535 }
 536
 537 // Called after a view is added or removed.
 538 // The default implementation deletes the document if
 539 // there are no more views.
 540 void wxDocument::OnChangedViewList()
 541 {
 542     if ( m_documentViews.empty() && OnSaveModified() )
 543         delete this;
 544 }
 545
 546 void wxDocument::UpdateAllViews(wxView *sender, wxObject *hint)
 547 {
 548     wxList::compatibility_iterator node = m_documentViews.GetFirst();
 549     while (node)
 550     {
 551         wxView *view = (wxView *)node->GetData();
 552         if (view != sender)
 553             view->OnUpdate(sender, hint);
 554         node = node->GetNext();
 555     }
 556 }
 557
 558 void wxDocument::NotifyClosing()
 559 {
 560     wxList::compatibility_iterator node = m_documentViews.GetFirst();
 561     while (node)
 562     {
 563         wxView *view = (wxView *)node->GetData();
 564         view->OnClosingDocument();
 565         node = node->GetNext();
 566     }
 567 }
 568
 569 void wxDocument::SetFilename(const wxString& filename, bool notifyViews)
 570 {
 571     m_documentFile = filename;
 572     OnChangeFilename(notifyViews);
 573 }
 574
 575 void wxDocument::OnChangeFilename(bool notifyViews)
 576 {
 577     if ( notifyViews )
 578     {
 579         // Notify the views that the filename has changed
 580         wxList::compatibility_iterator node = m_documentViews.GetFirst();
 581         while (node)
 582         {
 583             wxView *view = (wxView *)node->GetData();
 584             view->OnChangeFilename();
 585             node = node->GetNext();
 586         }
 587     }
 588 }
 589
 590 bool wxDocument::DoSaveDocument(const wxString& file)
 591 {
 592 #if wxUSE_STD_IOSTREAM
 593     wxSTD ofstream store(file.mb_str(), wxSTD ios::binary);
 594     if ( !store )
 595 #else
 596     wxFileOutputStream store(file);
 597     if ( store.GetLastError() != wxSTREAM_NO_ERROR )
 598 #endif
 599     {
 600         wxLogError(_("File \"%s\" could not be opened for writing."), file);
 601         return false;
 602     }
 603
 604     if (!SaveObject(store))
 605     {
 606         wxLogError(_("Failed to save document to the file \"%s\"."), file);
 607         return false;
 608     }
 609
 610     return true;
 611 }
 612
 613 bool wxDocument::DoOpenDocument(const wxString& file)
 614 {
 615 #if wxUSE_STD_IOSTREAM
 616     wxSTD ifstream store(file.mb_str(), wxSTD ios::binary);
 617     if ( !store )
 618 #else
 619     wxFileInputStream store(file);
 620     if (store.GetLastError() != wxSTREAM_NO_ERROR || !store.IsOk())
 621 #endif
 622     {
 623         wxLogError(_("File \"%s\" could not be opened for reading."), file);
 624         return false;
 625     }
 626
 627 #if wxUSE_STD_IOSTREAM
 628     LoadObject(store);
 629     if ( !store )
 630 #else
 631     int res = LoadObject(store).GetLastError();
 632     if ( res != wxSTREAM_NO_ERROR && res != wxSTREAM_EOF )
 633 #endif
 634     {
 635         wxLogError(_("Failed to read document from the file \"%s\"."), file);
 636         return false;
 637     }
 638
 639     return true;
 640 }
 641
 642
 643 // ----------------------------------------------------------------------------
 644 // Document view
 645 // ----------------------------------------------------------------------------
 646
 647 wxView::wxView()
 648 {
 649     m_viewDocument = NULL;
 650
 651     m_viewFrame = NULL;
 652
 653     m_docChildFrame = NULL;
 654 }
 655
 656 wxView::~wxView()
 657 {
 658     GetDocumentManager()->ActivateView(this, false);
 659
 660     // reset our frame view first, before removing it from the document as
 661     // SetView(NULL) is a simple call while RemoveView() may result in user
 662     // code being executed and this user code can, for example, show a message
 663     // box which would result in an activation event for m_docChildFrame and so
 664     // could reactivate the view being destroyed -- unless we reset it first
 665     if ( m_docChildFrame && m_docChildFrame->GetView() == this )
 666         m_docChildFrame->SetView(NULL);
 667
 668     if ( m_viewDocument )
 669         m_viewDocument->RemoveView(this);
 670 }
 671
 672 bool wxView::TryBefore(wxEvent& event)
 673 {
 674     wxDocument * const doc = GetDocument();
 675     return doc && doc->ProcessEventHere(event);
 676 }
 677
 678 void wxView::OnActivateView(bool WXUNUSED(activate),
 679                             wxView *WXUNUSED(activeView),
 680                             wxView *WXUNUSED(deactiveView))
 681 {
 682 }
 683
 684 void wxView::OnPrint(wxDC *dc, wxObject *WXUNUSED(info))
 685 {
 686     OnDraw(dc);
 687 }
 688
 689 void wxView::OnUpdate(wxView *WXUNUSED(sender), wxObject *WXUNUSED(hint))
 690 {
 691 }
 692
 693 void wxView::OnChangeFilename()
 694 {
 695     // GetFrame can return wxWindow rather than wxTopLevelWindow due to
 696     // generic MDI implementation so use SetLabel rather than SetTitle.
 697     // It should cause SetTitle() for top level windows.
 698     wxWindow *win = GetFrame();
 699     if (!win) return;
 700
 701     wxDocument *doc = GetDocument();
 702     if (!doc) return;
 703
 704     win->SetLabel(doc->GetUserReadableName());
 705 }
 706
 707 void wxView::SetDocument(wxDocument *doc)
 708 {
 709     m_viewDocument = doc;
 710     if (doc)
 711         doc->AddView(this);
 712 }
 713
 714 bool wxView::Close(bool deleteWindow)
 715 {
 716     return OnClose(deleteWindow);
 717 }
 718
 719 void wxView::Activate(bool activate)
 720 {
 721     if (GetDocument() && GetDocumentManager())
 722     {
 723         OnActivateView(activate, this, GetDocumentManager()->GetCurrentView());
 724         GetDocumentManager()->ActivateView(this, activate);
 725     }
 726 }
 727
 728 bool wxView::OnClose(bool WXUNUSED(deleteWindow))
 729 {
 730     return GetDocument() ? GetDocument()->Close() : true;
 731 }
 732
 733 #if wxUSE_PRINTING_ARCHITECTURE
 734 wxPrintout *wxView::OnCreatePrintout()
 735 {
 736     return new wxDocPrintout(this);
 737 }
 738 #endif // wxUSE_PRINTING_ARCHITECTURE
 739
 740 // ----------------------------------------------------------------------------
 741 // wxDocTemplate
 742 // ----------------------------------------------------------------------------
 743
 744 wxDocTemplate::wxDocTemplate(wxDocManager *manager,
 745                              const wxString& descr,
 746                              const wxString& filter,
 747                              const wxString& dir,
 748                              const wxString& ext,
 749                              const wxString& docTypeName,
 750                              const wxString& viewTypeName,
 751                              wxClassInfo *docClassInfo,
 752                              wxClassInfo *viewClassInfo,
 753                              long flags)
 754 {
 755     m_documentManager = manager;
 756     m_description = descr;
 757     m_directory = dir;
 758     m_defaultExt = ext;
 759     m_fileFilter = filter;
 760     m_flags = flags;
 761     m_docTypeName = docTypeName;
 762     m_viewTypeName = viewTypeName;
 763     m_documentManager->AssociateTemplate(this);
 764
 765     m_docClassInfo = docClassInfo;
 766     m_viewClassInfo = viewClassInfo;
 767 }
 768
 769 wxDocTemplate::~wxDocTemplate()
 770 {
 771     m_documentManager->DisassociateTemplate(this);
 772 }
 773
 774 // Tries to dynamically construct an object of the right class.
 775 wxDocument *wxDocTemplate::CreateDocument(const wxString& path, long flags)
 776 {
 777     wxScopedPtr<wxDocument> doc(DoCreateDocument());
 778
 779     return doc && InitDocument(doc.get(), path, flags) ? doc.release() : NULL;
 780 }
 781
 782 bool
 783 wxDocTemplate::InitDocument(wxDocument* doc, const wxString& path, long flags)
 784 {
 785     doc->SetFilename(path);
 786     doc->SetDocumentTemplate(this);
 787     GetDocumentManager()->AddDocument(doc);
 788     doc->SetCommandProcessor(doc->OnCreateCommandProcessor());
 789
 790     if (doc->OnCreate(path, flags))
 791         return true;
 792
 793     if (GetDocumentManager()->GetDocuments().Member(doc))
 794         doc->DeleteAllViews();
 795     return false;
 796 }
 797
 798 wxView *wxDocTemplate::CreateView(wxDocument *doc, long flags)
 799 {
 800     wxScopedPtr<wxView> view(DoCreateView());
 801     if ( !view )
 802         return NULL;
 803
 804     view->SetDocument(doc);
 805     if ( !view->OnCreate(doc, flags) )
 806         return NULL;
 807
 808     return view.release();
 809 }
 810
 811 // The default (very primitive) format detection: check is the extension is
 812 // that of the template
 813 bool wxDocTemplate::FileMatchesTemplate(const wxString& path)
 814 {
 815     wxStringTokenizer parser (GetFileFilter(), wxT(";"));
 816     wxString anything = wxT ("*");
 817     while (parser.HasMoreTokens())
 818     {
 819         wxString filter = parser.GetNextToken();
 820         wxString filterExt = FindExtension (filter);
 821         if ( filter.IsSameAs (anything)    ||
 822              filterExt.IsSameAs (anything) ||
 823              filterExt.IsSameAs (FindExtension (path)) )
 824             return true;
 825     }
 826     return GetDefaultExtension().IsSameAs(FindExtension(path));
 827 }
 828
 829 wxDocument *wxDocTemplate::DoCreateDocument()
 830 {
 831     if (!m_docClassInfo)
 832         return NULL;
 833
 834     return static_cast<wxDocument *>(m_docClassInfo->CreateObject());
 835 }
 836
 837 wxView *wxDocTemplate::DoCreateView()
 838 {
 839     if (!m_viewClassInfo)
 840         return NULL;
 841
 842     return static_cast<wxView *>(m_viewClassInfo->CreateObject());
 843 }
 844
 845 // ----------------------------------------------------------------------------
 846 // wxDocManager
 847 // ----------------------------------------------------------------------------
 848
 849 BEGIN_EVENT_TABLE(wxDocManager, wxEvtHandler)
 850     EVT_MENU(wxID_OPEN, wxDocManager::OnFileOpen)
 851     EVT_MENU(wxID_CLOSE, wxDocManager::OnFileClose)
 852     EVT_MENU(wxID_CLOSE_ALL, wxDocManager::OnFileCloseAll)
 853     EVT_MENU(wxID_REVERT, wxDocManager::OnFileRevert)
 854     EVT_MENU(wxID_NEW, wxDocManager::OnFileNew)
 855     EVT_MENU(wxID_SAVE, wxDocManager::OnFileSave)
 856     EVT_MENU(wxID_SAVEAS, wxDocManager::OnFileSaveAs)
 857     EVT_MENU(wxID_UNDO, wxDocManager::OnUndo)
 858     EVT_MENU(wxID_REDO, wxDocManager::OnRedo)
 859
 860     EVT_UPDATE_UI(wxID_OPEN, wxDocManager::OnUpdateFileOpen)
 861     EVT_UPDATE_UI(wxID_CLOSE, wxDocManager::OnUpdateDisableIfNoDoc)
 862     EVT_UPDATE_UI(wxID_CLOSE_ALL, wxDocManager::OnUpdateDisableIfNoDoc)
 863     EVT_UPDATE_UI(wxID_REVERT, wxDocManager::OnUpdateDisableIfNoDoc)
 864     EVT_UPDATE_UI(wxID_NEW, wxDocManager::OnUpdateFileNew)
 865     EVT_UPDATE_UI(wxID_SAVE, wxDocManager::OnUpdateFileSave)
 866     EVT_UPDATE_UI(wxID_SAVEAS, wxDocManager::OnUpdateDisableIfNoDoc)
 867     EVT_UPDATE_UI(wxID_UNDO, wxDocManager::OnUpdateUndo)
 868     EVT_UPDATE_UI(wxID_REDO, wxDocManager::OnUpdateRedo)
 869
 870 #if wxUSE_PRINTING_ARCHITECTURE
 871     EVT_MENU(wxID_PRINT, wxDocManager::OnPrint)
 872     EVT_MENU(wxID_PREVIEW, wxDocManager::OnPreview)
 873
 874     EVT_UPDATE_UI(wxID_PRINT, wxDocManager::OnUpdateDisableIfNoDoc)
 875     EVT_UPDATE_UI(wxID_PREVIEW, wxDocManager::OnUpdateDisableIfNoDoc)
 876 #endif
 877 END_EVENT_TABLE()
 878
 879 wxDocManager* wxDocManager::sm_docManager = NULL;
 880
 881 wxDocManager::wxDocManager(long WXUNUSED(flags), bool initialize)
 882 {
 883     wxASSERT_MSG( !sm_docManager, "multiple wxDocManagers not allowed" );
 884
 885     sm_docManager = this;
 886
 887     m_defaultDocumentNameCounter = 1;
 888     m_currentView = NULL;
 889     m_maxDocsOpen = INT_MAX;
 890     m_fileHistory = NULL;
 891     if ( initialize )
 892         Initialize();
 893 }
 894
 895 wxDocManager::~wxDocManager()
 896 {
 897     Clear();
 898     delete m_fileHistory;
 899     sm_docManager = NULL;
 900 }
 901
 902 // closes the specified document
 903 bool wxDocManager::CloseDocument(wxDocument* doc, bool force)
 904 {
 905     if ( !doc->Close() && !force )
 906         return false;
 907
 908     // Implicitly deletes the document when
 909     // the last view is deleted
 910     doc->DeleteAllViews();
 911
 912     // Check we're really deleted
 913     if (m_docs.Member(doc))
 914         delete doc;
 915
 916     return true;
 917 }
 918
 919 bool wxDocManager::CloseDocuments(bool force)
 920 {
 921     wxList::compatibility_iterator node = m_docs.GetFirst();
 922     while (node)
 923     {
 924         wxDocument *doc = (wxDocument *)node->GetData();
 925         wxList::compatibility_iterator next = node->GetNext();
 926
 927         if (!CloseDocument(doc, force))
 928             return false;
 929
 930         // This assumes that documents are not connected in
 931         // any way, i.e. deleting one document does NOT
 932         // delete another.
 933         node = next;
 934     }
 935     return true;
 936 }
 937
 938 bool wxDocManager::Clear(bool force)
 939 {
 940     if (!CloseDocuments(force))
 941         return false;
 942
 943     m_currentView = NULL;
 944
 945     wxList::compatibility_iterator node = m_templates.GetFirst();
 946     while (node)
 947     {
 948         wxDocTemplate *templ = (wxDocTemplate*) node->GetData();
 949         wxList::compatibility_iterator next = node->GetNext();
 950         delete templ;
 951         node = next;
 952     }
 953     return true;
 954 }
 955
 956 bool wxDocManager::Initialize()
 957 {
 958     m_fileHistory = OnCreateFileHistory();
 959     return true;
 960 }
 961
 962 wxString wxDocManager::GetLastDirectory() const
 963 {
 964     // use the system-dependent default location for the document files if
 965     // we're being opened for the first time
 966     if ( m_lastDirectory.empty() )
 967     {
 968         wxDocManager * const self = const_cast<wxDocManager *>(this);
 969         self->m_lastDirectory = wxStandardPaths::Get().GetAppDocumentsDir();
 970     }
 971
 972     return m_lastDirectory;
 973 }
 974
 975 wxFileHistory *wxDocManager::OnCreateFileHistory()
 976 {
 977     return new wxFileHistory;
 978 }
 979
 980 void wxDocManager::OnFileClose(wxCommandEvent& WXUNUSED(event))
 981 {
 982     wxDocument *doc = GetCurrentDocument();
 983     if (!doc)
 984         return;
 985     if (doc->Close())
 986     {
 987         doc->DeleteAllViews();
 988         if (m_docs.Member(doc))
 989             delete doc;
 990     }
 991 }
 992
 993 void wxDocManager::OnFileCloseAll(wxCommandEvent& WXUNUSED(event))
 994 {
 995     CloseDocuments(false);
 996 }
 997
 998 void wxDocManager::OnFileNew(wxCommandEvent& WXUNUSED(event))
 999 {
1000     CreateNewDocument();
1001 }
1002
1003 void wxDocManager::OnFileOpen(wxCommandEvent& WXUNUSED(event))
1004 {
1005     if ( !CreateDocument("") )
1006     {
1007         OnOpenFileFailure();
1008     }
1009 }
1010
1011 void wxDocManager::OnFileRevert(wxCommandEvent& WXUNUSED(event))
1012 {
1013     wxDocument *doc = GetCurrentDocument();
1014     if (!doc)
1015         return;
1016     doc->Revert();
1017 }
1018
1019 void wxDocManager::OnFileSave(wxCommandEvent& WXUNUSED(event))
1020 {
1021     wxDocument *doc = GetCurrentDocument();
1022     if (!doc)
1023         return;
1024     doc->Save();
1025 }
1026
1027 void wxDocManager::OnFileSaveAs(wxCommandEvent& WXUNUSED(event))
1028 {
1029     wxDocument *doc = GetCurrentDocument();
1030     if (!doc)
1031         return;
1032     doc->SaveAs();
1033 }
1034
1035 void wxDocManager::OnPrint(wxCommandEvent& WXUNUSED(event))
1036 {
1037 #if wxUSE_PRINTING_ARCHITECTURE
1038     wxView *view = GetActiveView();
1039     if (!view)
1040         return;
1041
1042     wxPrintout *printout = view->OnCreatePrintout();
1043     if (printout)
1044     {
1045         wxPrinter printer;
1046         printer.Print(view->GetFrame(), printout, true);
1047
1048         delete printout;
1049     }
1050 #endif // wxUSE_PRINTING_ARCHITECTURE
1051 }
1052
1053 void wxDocManager::OnPreview(wxCommandEvent& WXUNUSED(event))
1054 {
1055 #if wxUSE_PRINTING_ARCHITECTURE
1056     wxView *view = GetActiveView();
1057     if (!view)
1058         return;
1059
1060     wxPrintout *printout = view->OnCreatePrintout();
1061     if (printout)
1062     {
1063         // Pass two printout objects: for preview, and possible printing.
1064         wxPrintPreviewBase *
1065             preview = new wxPrintPreview(printout, view->OnCreatePrintout());
1066         if ( !preview->Ok() )
1067         {
1068             delete preview;
1069             wxLogError(_("Print preview creation failed."));
1070             return;
1071         }
1072
1073         wxPreviewFrame *
1074             frame = new wxPreviewFrame(preview, wxTheApp->GetTopWindow(),
1075                                        _("Print Preview"));
1076         frame->Centre(wxBOTH);
1077         frame->Initialize();
1078         frame->Show(true);
1079     }
1080 #endif // wxUSE_PRINTING_ARCHITECTURE
1081 }
1082
1083 void wxDocManager::OnUndo(wxCommandEvent& event)
1084 {
1085     wxCommandProcessor * const cmdproc = GetCurrentCommandProcessor();
1086     if ( !cmdproc )
1087     {
1088         event.Skip();
1089         return;
1090     }
1091
1092     cmdproc->Undo();
1093 }
1094
1095 void wxDocManager::OnRedo(wxCommandEvent& event)
1096 {
1097     wxCommandProcessor * const cmdproc = GetCurrentCommandProcessor();
1098     if ( !cmdproc )
1099     {
1100         event.Skip();
1101         return;
1102     }
1103
1104     cmdproc->Redo();
1105 }
1106
1107 // Handlers for UI update commands
1108
1109 void wxDocManager::OnUpdateFileOpen(wxUpdateUIEvent& event)
1110 {
1111     // CreateDocument() (which is called from OnFileOpen) may succeed
1112     // only when there is at least a template:
1113     event.Enable( GetTemplates().GetCount()>0 );
1114 }
1115
1116 void wxDocManager::OnUpdateDisableIfNoDoc(wxUpdateUIEvent& event)
1117 {
1118     event.Enable( GetCurrentDocument() != NULL );
1119 }
1120
1121 void wxDocManager::OnUpdateFileNew(wxUpdateUIEvent& event)
1122 {
1123     // CreateDocument() (which is called from OnFileNew) may succeed
1124     // only when there is at least a template:
1125     event.Enable( GetTemplates().GetCount()>0 );
1126 }
1127
1128 void wxDocManager::OnUpdateFileSave(wxUpdateUIEvent& event)
1129 {
1130     wxDocument * const doc = GetCurrentDocument();
1131     event.Enable( doc && !doc->AlreadySaved() );
1132 }
1133
1134 void wxDocManager::OnUpdateUndo(wxUpdateUIEvent& event)
1135 {
1136     wxCommandProcessor * const cmdproc = GetCurrentCommandProcessor();
1137     if ( !cmdproc )
1138     {
1139         event.Enable(false);
1140         return;
1141     }
1142
1143     event.Enable(cmdproc->CanUndo());
1144     cmdproc->SetMenuStrings();
1145 }
1146
1147 void wxDocManager::OnUpdateRedo(wxUpdateUIEvent& event)
1148 {
1149     wxCommandProcessor * const cmdproc = GetCurrentCommandProcessor();
1150     if ( !cmdproc )
1151     {
1152         event.Enable(false);
1153         return;
1154     }
1155
1156     event.Enable(cmdproc->CanRedo());
1157     cmdproc->SetMenuStrings();
1158 }
1159
1160 wxView *wxDocManager::GetActiveView() const
1161 {
1162     wxView *view = GetCurrentView();
1163
1164     if ( !view && !m_docs.empty() )
1165     {
1166         // if we have exactly one document, consider its view to be the current
1167         // one
1168         //
1169         // VZ: I'm not exactly sure why is this needed but this is how this
1170         //     code used to behave before the bug #9518 was fixed and it seems
1171         //     safer to preserve the old logic
1172         wxList::compatibility_iterator node = m_docs.GetFirst();
1173         if ( !node->GetNext() )
1174         {
1175             wxDocument *doc = static_cast<wxDocument *>(node->GetData());
1176             view = doc->GetFirstView();
1177         }
1178         //else: we have more than one document
1179     }
1180
1181     return view;
1182 }
1183
1184 bool wxDocManager::TryBefore(wxEvent& event)
1185 {
1186     wxView * const view = GetActiveView();
1187     return view && view->ProcessEventHere(event);
1188 }
1189
1190 namespace
1191 {
1192
1193 // helper function: return only the visible templates
1194 wxDocTemplates GetVisibleTemplates(const wxList& allTemplates)
1195 {
1196     // select only the visible templates
1197     const size_t totalNumTemplates = allTemplates.GetCount();
1198     wxDocTemplates templates;
1199     if ( totalNumTemplates )
1200     {
1201         templates.reserve(totalNumTemplates);
1202
1203         for ( wxList::const_iterator i = allTemplates.begin(),
1204                                    end = allTemplates.end();
1205               i != end;
1206               ++i )
1207         {
1208             wxDocTemplate * const temp = (wxDocTemplate *)*i;
1209             if ( temp->IsVisible() )
1210                 templates.push_back(temp);
1211         }
1212     }
1213
1214     return templates;
1215 }
1216
1217 } // anonymous namespace
1218
1219 wxDocument *wxDocManager::CreateDocument(const wxString& pathOrig, long flags)
1220 {
1221     // this ought to be const but SelectDocumentType/Path() are not
1222     // const-correct and can't be changed as, being virtual, this risks
1223     // breaking user code overriding them
1224     wxDocTemplates templates(GetVisibleTemplates(m_templates));
1225     const size_t numTemplates = templates.size();
1226     if ( !numTemplates )
1227     {
1228         // no templates can be used, can't create document
1229         return NULL;
1230     }
1231
1232
1233     // normally user should select the template to use but wxDOC_SILENT flag we
1234     // choose one ourselves
1235     wxString path = pathOrig;   // may be modified below
1236     wxDocTemplate *temp;
1237     if ( flags & wxDOC_SILENT )
1238     {
1239         wxASSERT_MSG( !path.empty(),
1240                       "using empty path with wxDOC_SILENT doesn't make sense" );
1241
1242         temp = FindTemplateForPath(path);
1243         if ( !temp )
1244         {
1245             wxLogWarning(_("The format of file '%s' couldn't be determined."),
1246                          path);
1247         }
1248     }
1249     else // not silent, ask the user
1250     {
1251         // for the new file we need just the template, for an existing one we
1252         // need the template and the path, unless it's already specified
1253         if ( (flags & wxDOC_NEW) || !path.empty() )
1254             temp = SelectDocumentType(&templates[0], numTemplates);
1255         else
1256             temp = SelectDocumentPath(&templates[0], numTemplates, path, flags);
1257     }
1258
1259     if ( !temp )
1260         return NULL;
1261
1262     // check whether the document with this path is already opened
1263     if ( !path.empty() )
1264     {
1265         const wxFileName fn(path);
1266         for ( wxList::const_iterator i = m_docs.begin(); i != m_docs.end(); ++i )
1267         {
1268             wxDocument * const doc = (wxDocument*)*i;
1269
1270             if ( fn == doc->GetFilename() )
1271             {
1272                 // file already open, just activate it and return
1273                 if ( doc->GetFirstView() )
1274                 {
1275                     ActivateView(doc->GetFirstView());
1276                     if ( doc->GetDocumentWindow() )
1277                         doc->GetDocumentWindow()->SetFocus();
1278                     return doc;
1279                 }
1280             }
1281         }
1282     }
1283
1284
1285     // no, we need to create a new document
1286
1287
1288     // if we've reached the max number of docs, close the first one.
1289     if ( (int)GetDocuments().GetCount() >= m_maxDocsOpen )
1290     {
1291         if ( !CloseDocument((wxDocument *)GetDocuments().GetFirst()->GetData()) )
1292         {
1293             // can't open the new document if closing the old one failed
1294             return NULL;
1295         }
1296     }
1297
1298
1299     // do create and initialize the new document finally
1300     wxDocument * const docNew = temp->CreateDocument(path, flags);
1301     if ( !docNew )
1302         return NULL;
1303
1304     docNew->SetDocumentName(temp->GetDocumentName());
1305     docNew->SetDocumentTemplate(temp);
1306
1307     wxTRY
1308     {
1309         // call the appropriate function depending on whether we're creating a
1310         // new file or opening an existing one
1311         if ( !(flags & wxDOC_NEW ? docNew->OnNewDocument()
1312                                  : docNew->OnOpenDocument(path)) )
1313         {
1314             docNew->DeleteAllViews();
1315             return NULL;
1316         }
1317     }
1318     wxCATCH_ALL( docNew->DeleteAllViews(); throw; )
1319
1320     // add the successfully opened file to MRU, but only if we're going to be
1321     // able to reopen it successfully later which requires the template for
1322     // this document to be retrievable from the file extension
1323     if ( !(flags & wxDOC_NEW) && temp->FileMatchesTemplate(path) )
1324         AddFileToHistory(path);
1325
1326     return docNew;
1327 }
1328
1329 wxView *wxDocManager::CreateView(wxDocument *doc, long flags)
1330 {
1331     wxDocTemplates templates(GetVisibleTemplates(m_templates));
1332     const size_t numTemplates = templates.size();
1333
1334     if ( numTemplates == 0 )
1335         return NULL;
1336
1337     wxDocTemplate * const
1338     temp = numTemplates == 1 ? templates[0]
1339                              : SelectViewType(&templates[0], numTemplates);
1340
1341     if ( !temp )
1342         return NULL;
1343
1344     wxView *view = temp->CreateView(doc, flags);
1345     if ( view )
1346         view->SetViewName(temp->GetViewName());
1347     return view;
1348 }
1349
1350 // Not yet implemented
1351 void
1352 wxDocManager::DeleteTemplate(wxDocTemplate *WXUNUSED(temp), long WXUNUSED(flags))
1353 {
1354 }
1355
1356 // Not yet implemented
1357 bool wxDocManager::FlushDoc(wxDocument *WXUNUSED(doc))
1358 {
1359     return false;
1360 }
1361
1362 wxDocument *wxDocManager::GetCurrentDocument() const
1363 {
1364     wxView * const view = GetActiveView();
1365     return view ? view->GetDocument() : NULL;
1366 }
1367
1368 wxCommandProcessor *wxDocManager::GetCurrentCommandProcessor() const
1369 {
1370     wxDocument * const doc = GetCurrentDocument();
1371     return doc ? doc->GetCommandProcessor() : NULL;
1372 }
1373
1374 // Make a default name for a new document
1375 #if WXWIN_COMPATIBILITY_2_8
1376 bool wxDocManager::MakeDefaultName(wxString& WXUNUSED(name))
1377 {
1378     // we consider that this function can only be overridden by the user code,
1379     // not called by it as it only makes sense to call it internally, so we
1380     // don't bother to return anything from here
1381     return false;
1382 }
1383 #endif // WXWIN_COMPATIBILITY_2_8
1384
1385 wxString wxDocManager::MakeNewDocumentName()
1386 {
1387     wxString name;
1388
1389 #if WXWIN_COMPATIBILITY_2_8
1390     if ( !MakeDefaultName(name) )
1391 #endif // WXWIN_COMPATIBILITY_2_8
1392     {
1393         name.Printf(_("unnamed%d"), m_defaultDocumentNameCounter);
1394         m_defaultDocumentNameCounter++;
1395     }
1396
1397     return name;
1398 }
1399
1400 // Make a frame title (override this to do something different)
1401 // If docName is empty, a document is not currently active.
1402 wxString wxDocManager::MakeFrameTitle(wxDocument* doc)
1403 {
1404     wxString appName = wxTheApp->GetAppDisplayName();
1405     wxString title;
1406     if (!doc)
1407         title = appName;
1408     else
1409     {
1410         wxString docName = doc->GetUserReadableName();
1411         title = docName + wxString(_(" - ")) + appName;
1412     }
1413     return title;
1414 }
1415
1416
1417 // Not yet implemented
1418 wxDocTemplate *wxDocManager::MatchTemplate(const wxString& WXUNUSED(path))
1419 {
1420     return NULL;
1421 }
1422
1423 // File history management
1424 void wxDocManager::AddFileToHistory(const wxString& file)
1425 {
1426     if (m_fileHistory)
1427         m_fileHistory->AddFileToHistory(file);
1428 }
1429
1430 void wxDocManager::RemoveFileFromHistory(size_t i)
1431 {
1432     if (m_fileHistory)
1433         m_fileHistory->RemoveFileFromHistory(i);
1434 }
1435
1436 wxString wxDocManager::GetHistoryFile(size_t i) const
1437 {
1438     wxString histFile;
1439
1440     if (m_fileHistory)
1441         histFile = m_fileHistory->GetHistoryFile(i);
1442
1443     return histFile;
1444 }
1445
1446 void wxDocManager::FileHistoryUseMenu(wxMenu *menu)
1447 {
1448     if (m_fileHistory)
1449         m_fileHistory->UseMenu(menu);
1450 }
1451
1452 void wxDocManager::FileHistoryRemoveMenu(wxMenu *menu)
1453 {
1454     if (m_fileHistory)
1455         m_fileHistory->RemoveMenu(menu);
1456 }
1457
1458 #if wxUSE_CONFIG
1459 void wxDocManager::FileHistoryLoad(const wxConfigBase& config)
1460 {
1461     if (m_fileHistory)
1462         m_fileHistory->Load(config);
1463 }
1464
1465 void wxDocManager::FileHistorySave(wxConfigBase& config)
1466 {
1467     if (m_fileHistory)
1468         m_fileHistory->Save(config);
1469 }
1470 #endif
1471
1472 void wxDocManager::FileHistoryAddFilesToMenu(wxMenu* menu)
1473 {
1474     if (m_fileHistory)
1475         m_fileHistory->AddFilesToMenu(menu);
1476 }
1477
1478 void wxDocManager::FileHistoryAddFilesToMenu()
1479 {
1480     if (m_fileHistory)
1481         m_fileHistory->AddFilesToMenu();
1482 }
1483
1484 size_t wxDocManager::GetHistoryFilesCount() const
1485 {
1486     return m_fileHistory ? m_fileHistory->GetCount() : 0;
1487 }
1488
1489
1490 // Find out the document template via matching in the document file format
1491 // against that of the template
1492 wxDocTemplate *wxDocManager::FindTemplateForPath(const wxString& path)
1493 {
1494     wxDocTemplate *theTemplate = NULL;
1495
1496     // Find the template which this extension corresponds to
1497     for (size_t i = 0; i < m_templates.GetCount(); i++)
1498     {
1499         wxDocTemplate *temp = (wxDocTemplate *)m_templates.Item(i)->GetData();
1500         if ( temp->FileMatchesTemplate(path) )
1501         {
1502             theTemplate = temp;
1503             break;
1504         }
1505     }
1506     return theTemplate;
1507 }
1508
1509 // Prompts user to open a file, using file specs in templates.
1510 // Must extend the file selector dialog or implement own; OR
1511 // match the extension to the template extension.
1512
1513 wxDocTemplate *wxDocManager::SelectDocumentPath(wxDocTemplate **templates,
1514                                                 int noTemplates,
1515                                                 wxString& path,
1516                                                 long WXUNUSED(flags),
1517                                                 bool WXUNUSED(save))
1518 {
1519 #ifdef wxHAS_MULTIPLE_FILEDLG_FILTERS
1520     wxString descrBuf;
1521
1522     for (int i = 0; i < noTemplates; i++)
1523     {
1524         if (templates[i]->IsVisible())
1525         {
1526             // add a '|' to separate this filter from the previous one
1527             if ( !descrBuf.empty() )
1528                 descrBuf << wxT('|');
1529
1530             descrBuf << templates[i]->GetDescription()
1531                 << wxT(" (") << templates[i]->GetFileFilter() << wxT(") |")
1532                 << templates[i]->GetFileFilter();
1533         }
1534     }
1535 #else
1536     wxString descrBuf = wxT("*.*");
1537     wxUnusedVar(noTemplates);
1538 #endif
1539
1540     int FilterIndex = -1;
1541
1542     wxWindow* parent = wxFindSuitableParent();
1543
1544     wxString pathTmp = wxFileSelectorEx(_("Open File"),
1545                                         GetLastDirectory(),
1546                                         wxEmptyString,
1547                                         &FilterIndex,
1548                                         descrBuf,
1549                                         0,
1550                                         parent);
1551
1552     wxDocTemplate *theTemplate = NULL;
1553     if (!pathTmp.empty())
1554     {
1555         if (!wxFileExists(pathTmp))
1556         {
1557             wxString msgTitle;
1558             if (!wxTheApp->GetAppDisplayName().empty())
1559                 msgTitle = wxTheApp->GetAppDisplayName();
1560             else
1561                 msgTitle = wxString(_("File error"));
1562
1563             wxMessageBox(_("Sorry, could not open this file."),
1564                          msgTitle,
1565                          wxOK | wxICON_EXCLAMATION | wxCENTRE,
1566                          parent);
1567
1568             path = wxEmptyString;
1569             return NULL;
1570         }
1571
1572         SetLastDirectory(wxPathOnly(pathTmp));
1573
1574         path = pathTmp;
1575
1576         // first choose the template using the extension, if this fails (i.e.
1577         // wxFileSelectorEx() didn't fill it), then use the path
1578         if ( FilterIndex != -1 )
1579             theTemplate = templates[FilterIndex];
1580         if ( !theTemplate )
1581             theTemplate = FindTemplateForPath(path);
1582         if ( !theTemplate )
1583         {
1584             // Since we do not add files with non-default extensions to the
1585             // file history this can only happen if the application changes the
1586             // allowed templates in runtime.
1587             wxMessageBox(_("Sorry, the format for this file is unknown."),
1588                          _("Open File"),
1589                          wxOK | wxICON_EXCLAMATION | wxCENTRE,
1590                          parent);
1591         }
1592     }
1593     else
1594     {
1595         path.clear();
1596     }
1597
1598     return theTemplate;
1599 }
1600
1601 wxDocTemplate *wxDocManager::SelectDocumentType(wxDocTemplate **templates,
1602                                                 int noTemplates, bool sort)
1603 {
1604     wxArrayString strings;
1605     wxScopedArray<wxDocTemplate *> data(new wxDocTemplate *[noTemplates]);
1606     int i;
1607     int n = 0;
1608
1609     for (i = 0; i < noTemplates; i++)
1610     {
1611         if (templates[i]->IsVisible())
1612         {
1613             int j;
1614             bool want = true;
1615             for (j = 0; j < n; j++)
1616             {
1617                 //filter out NOT unique documents + view combinations
1618                 if ( templates[i]->m_docTypeName == data[j]->m_docTypeName &&
1619                      templates[i]->m_viewTypeName == data[j]->m_viewTypeName
1620                    )
1621                     want = false;
1622             }
1623
1624             if ( want )
1625             {
1626                 strings.Add(templates[i]->m_description);
1627
1628                 data[n] = templates[i];
1629                 n ++;
1630             }
1631         }
1632     }  // for
1633
1634     if (sort)
1635     {
1636         strings.Sort(); // ascending sort
1637         // Yes, this will be slow, but template lists
1638         // are typically short.
1639         int j;
1640         n = strings.Count();
1641         for (i = 0; i < n; i++)
1642         {
1643             for (j = 0; j < noTemplates; j++)
1644             {
1645                 if (strings[i] == templates[j]->m_description)
1646                     data[i] = templates[j];
1647             }
1648         }
1649     }
1650
1651     wxDocTemplate *theTemplate;
1652
1653     switch ( n )
1654     {
1655         case 0:
1656             // no visible templates, hence nothing to choose from
1657             theTemplate = NULL;
1658             break;
1659
1660         case 1:
1661             // don't propose the user to choose if he has no choice
1662             theTemplate = data[0];
1663             break;
1664
1665         default:
1666             // propose the user to choose one of several
1667             theTemplate = (wxDocTemplate *)wxGetSingleChoiceData
1668                           (
1669                             _("Select a document template"),
1670                             _("Templates"),
1671                             strings,
1672                             (void **)data.get(),
1673                             wxFindSuitableParent()
1674                           );
1675     }
1676
1677     return theTemplate;
1678 }
1679
1680 wxDocTemplate *wxDocManager::SelectViewType(wxDocTemplate **templates,
1681                                             int noTemplates, bool sort)
1682 {
1683     wxArrayString strings;
1684     wxScopedArray<wxDocTemplate *> data(new wxDocTemplate *[noTemplates]);
1685     int i;
1686     int n = 0;
1687
1688     for (i = 0; i < noTemplates; i++)
1689     {
1690         wxDocTemplate *templ = templates[i];
1691         if ( templ->IsVisible() && !templ->GetViewName().empty() )
1692         {
1693             int j;
1694             bool want = true;
1695             for (j = 0; j < n; j++)
1696             {
1697                 //filter out NOT unique views
1698                 if ( templates[i]->m_viewTypeName == data[j]->m_viewTypeName )
1699                     want = false;
1700             }
1701
1702             if ( want )
1703             {
1704                 strings.Add(templ->m_viewTypeName);
1705                 data[n] = templ;
1706                 n ++;
1707             }
1708         }
1709     }
1710
1711     if (sort)
1712     {
1713         strings.Sort(); // ascending sort
1714         // Yes, this will be slow, but template lists
1715         // are typically short.
1716         int j;
1717         n = strings.Count();
1718         for (i = 0; i < n; i++)
1719         {
1720             for (j = 0; j < noTemplates; j++)
1721             {
1722                 if (strings[i] == templates[j]->m_viewTypeName)
1723                     data[i] = templates[j];
1724             }
1725         }
1726     }
1727
1728     wxDocTemplate *theTemplate;
1729
1730     // the same logic as above
1731     switch ( n )
1732     {
1733         case 0:
1734             theTemplate = NULL;
1735             break;
1736
1737         case 1:
1738             theTemplate = data[0];
1739             break;
1740
1741         default:
1742             theTemplate = (wxDocTemplate *)wxGetSingleChoiceData
1743                           (
1744                             _("Select a document view"),
1745                             _("Views"),
1746                             strings,
1747                             (void **)data.get(),
1748                             wxFindSuitableParent()
1749                           );
1750
1751     }
1752
1753     return theTemplate;
1754 }
1755
1756 void wxDocManager::AssociateTemplate(wxDocTemplate *temp)
1757 {
1758     if (!m_templates.Member(temp))
1759         m_templates.Append(temp);
1760 }
1761
1762 void wxDocManager::DisassociateTemplate(wxDocTemplate *temp)
1763 {
1764     m_templates.DeleteObject(temp);
1765 }
1766
1767 // Add and remove a document from the manager's list
1768 void wxDocManager::AddDocument(wxDocument *doc)
1769 {
1770     if (!m_docs.Member(doc))
1771         m_docs.Append(doc);
1772 }
1773
1774 void wxDocManager::RemoveDocument(wxDocument *doc)
1775 {
1776     m_docs.DeleteObject(doc);
1777 }
1778
1779 // Views or windows should inform the document manager
1780 // when a view is going in or out of focus
1781 void wxDocManager::ActivateView(wxView *view, bool activate)
1782 {
1783     if ( activate )
1784     {
1785         m_currentView = view;
1786     }
1787     else // deactivate
1788     {
1789         if ( m_currentView == view )
1790         {
1791             // don't keep stale pointer
1792             m_currentView = NULL;
1793         }
1794     }
1795 }
1796
1797 // ----------------------------------------------------------------------------
1798 // wxDocChildFrameAnyBase
1799 // ----------------------------------------------------------------------------
1800
1801 bool wxDocChildFrameAnyBase::CloseView(wxCloseEvent& event)
1802 {
1803     if ( m_childView )
1804     {
1805         if ( event.CanVeto() && !m_childView->Close(false) )
1806         {
1807             event.Veto();
1808             return false;
1809         }
1810
1811         m_childView->Activate(false);
1812         delete m_childView;
1813         m_childView = NULL;
1814     }
1815
1816     m_childDocument = NULL;
1817
1818     return true;
1819 }
1820
1821 // ----------------------------------------------------------------------------
1822 // Default parent frame
1823 // ----------------------------------------------------------------------------
1824
1825 BEGIN_EVENT_TABLE(wxDocParentFrame, wxFrame)
1826     EVT_MENU(wxID_EXIT, wxDocParentFrame::OnExit)
1827     EVT_MENU_RANGE(wxID_FILE1, wxID_FILE9, wxDocParentFrame::OnMRUFile)
1828     EVT_CLOSE(wxDocParentFrame::OnCloseWindow)
1829 END_EVENT_TABLE()
1830
1831 wxDocParentFrame::wxDocParentFrame()
1832 {
1833     m_docManager = NULL;
1834 }
1835
1836 wxDocParentFrame::wxDocParentFrame(wxDocManager *manager,
1837                                    wxFrame *frame,
1838                                    wxWindowID id,
1839                                    const wxString& title,
1840                                    const wxPoint& pos,
1841                                    const wxSize& size,
1842                                    long style,
1843                                    const wxString& name)
1844                 : wxFrame(frame, id, title, pos, size, style, name)
1845 {
1846     m_docManager = manager;
1847 }
1848
1849 bool wxDocParentFrame::Create(wxDocManager *manager,
1850                               wxFrame *frame,
1851                               wxWindowID id,
1852                               const wxString& title,
1853                               const wxPoint& pos,
1854                               const wxSize& size,
1855                               long style,
1856                               const wxString& name)
1857 {
1858     m_docManager = manager;
1859     return base_type::Create(frame, id, title, pos, size, style, name);
1860 }
1861
1862 void wxDocParentFrame::OnExit(wxCommandEvent& WXUNUSED(event))
1863 {
1864     Close();
1865 }
1866
1867 void wxDocParentFrame::OnMRUFile(wxCommandEvent& event)
1868 {
1869     int n = event.GetId() - wxID_FILE1;  // the index in MRU list
1870     wxString filename(m_docManager->GetHistoryFile(n));
1871     if ( filename.empty() )
1872         return;
1873
1874     wxString errMsg; // must contain exactly one "%s" if non-empty
1875     if ( wxFile::Exists(filename) )
1876     {
1877         // try to open it
1878         if ( m_docManager->CreateDocument(filename, wxDOC_SILENT) )
1879             return;
1880
1881         errMsg = _("The file '%s' couldn't be opened.");
1882     }
1883     else // file doesn't exist
1884     {
1885         errMsg = _("The file '%s' doesn't exist and couldn't be opened.");
1886     }
1887
1888
1889     wxASSERT_MSG( !errMsg.empty(), "should have an error message" );
1890
1891     // remove the file which we can't open from the MRU list
1892     m_docManager->RemoveFileFromHistory(n);
1893
1894     // and tell the user about it
1895     wxLogError(errMsg + '\n' +
1896                _("It has been removed from the most recently used files list."),
1897                filename);
1898 }
1899
1900 // Extend event processing to search the view's event table
1901 bool wxDocParentFrame::TryBefore(wxEvent& event)
1902 {
1903     if ( m_docManager && m_docManager->ProcessEventHere(event) )
1904         return true;
1905
1906     return wxFrame::TryBefore(event);
1907 }
1908
1909 // Define the behaviour for the frame closing
1910 // - must delete all frames except for the main one.
1911 void wxDocParentFrame::OnCloseWindow(wxCloseEvent& event)
1912 {
1913     if (m_docManager->Clear(!event.CanVeto()))
1914     {
1915         Destroy();
1916     }
1917     else
1918         event.Veto();
1919 }
1920
1921 #if wxUSE_PRINTING_ARCHITECTURE
1922
1923 wxDocPrintout::wxDocPrintout(wxView *view, const wxString& title)
1924              : wxPrintout(title)
1925 {
1926     m_printoutView = view;
1927 }
1928
1929 bool wxDocPrintout::OnPrintPage(int WXUNUSED(page))
1930 {
1931     wxDC *dc = GetDC();
1932
1933     // Get the logical pixels per inch of screen and printer
1934     int ppiScreenX, ppiScreenY;
1935     GetPPIScreen(&ppiScreenX, &ppiScreenY);
1936     wxUnusedVar(ppiScreenY);
1937     int ppiPrinterX, ppiPrinterY;
1938     GetPPIPrinter(&ppiPrinterX, &ppiPrinterY);
1939     wxUnusedVar(ppiPrinterY);
1940
1941     // This scales the DC so that the printout roughly represents the
1942     // the screen scaling. The text point size _should_ be the right size
1943     // but in fact is too small for some reason. This is a detail that will
1944     // need to be addressed at some point but can be fudged for the
1945     // moment.
1946     float scale = (float)((float)ppiPrinterX/(float)ppiScreenX);
1947
1948     // Now we have to check in case our real page size is reduced
1949     // (e.g. because we're drawing to a print preview memory DC)
1950     int pageWidth, pageHeight;
1951     int w, h;
1952     dc->GetSize(&w, &h);
1953     GetPageSizePixels(&pageWidth, &pageHeight);
1954     wxUnusedVar(pageHeight);
1955
1956     // If printer pageWidth == current DC width, then this doesn't
1957     // change. But w might be the preview bitmap width, so scale down.
1958     float overallScale = scale * (float)(w/(float)pageWidth);
1959     dc->SetUserScale(overallScale, overallScale);
1960
1961     if (m_printoutView)
1962     {
1963         m_printoutView->OnDraw(dc);
1964     }
1965     return true;
1966 }
1967
1968 bool wxDocPrintout::HasPage(int pageNum)
1969 {
1970     return (pageNum == 1);
1971 }
1972
1973 bool wxDocPrintout::OnBeginDocument(int startPage, int endPage)
1974 {
1975     if (!wxPrintout::OnBeginDocument(startPage, endPage))
1976         return false;
1977
1978     return true;
1979 }
1980
1981 void wxDocPrintout::GetPageInfo(int *minPage, int *maxPage,
1982                                 int *selPageFrom, int *selPageTo)
1983 {
1984     *minPage = 1;
1985     *maxPage = 1;
1986     *selPageFrom = 1;
1987     *selPageTo = 1;
1988 }
1989
1990 #endif // wxUSE_PRINTING_ARCHITECTURE
1991
1992 // ----------------------------------------------------------------------------
1993 // File history (a.k.a. MRU, most recently used, files list)
1994 // ----------------------------------------------------------------------------
1995
1996 wxFileHistory::wxFileHistory(size_t maxFiles, wxWindowID idBase)
1997 {
1998     m_fileMaxFiles = maxFiles;
1999     m_idBase = idBase;
2000 }
2001
2002 void wxFileHistory::AddFileToHistory(const wxString& file)
2003 {
2004     // check if we don't already have this file
2005     const wxFileName fnNew(file);
2006     size_t i,
2007            numFiles = m_fileHistory.size();
2008     for ( i = 0; i < numFiles; i++ )
2009     {
2010         if ( fnNew == m_fileHistory[i] )
2011         {
2012             // we do have it, move it to the top of the history
2013             RemoveFileFromHistory(i);
2014             numFiles--;
2015             break;
2016         }
2017     }
2018
2019     // if we already have a full history, delete the one at the end
2020     if ( numFiles == m_fileMaxFiles )
2021     {
2022         RemoveFileFromHistory(--numFiles);
2023     }
2024
2025     // add a new menu item to all file menus (they will be updated below)
2026     for ( wxList::compatibility_iterator node = m_fileMenus.GetFirst();
2027         node;
2028         node = node->GetNext() )
2029     {
2030         wxMenu * const menu = (wxMenu *)node->GetData();
2031
2032         if ( !numFiles && menu->GetMenuItemCount() )
2033             menu->AppendSeparator();
2034
2035         // label doesn't matter, it will be set below anyhow, but it can't
2036         // be empty (this is supposed to indicate a stock item)
2037         menu->Append(m_idBase + numFiles, " ");
2038     }
2039
2040     // insert the new file in the beginning of the file history
2041     m_fileHistory.insert(m_fileHistory.begin(), file);
2042     numFiles++;
2043
2044     // update the labels in all menus
2045     for ( i = 0; i < numFiles; i++ )
2046     {
2047         // if in same directory just show the filename; otherwise the full path
2048         const wxFileName fnOld(m_fileHistory[i]);
2049
2050         wxString pathInMenu;
2051         if ( fnOld.GetPath() == fnNew.GetPath() )
2052         {
2053             pathInMenu = fnOld.GetFullName();
2054         }
2055         else // file in different directory
2056         {
2057             // absolute path; could also set relative path
2058             pathInMenu = m_fileHistory[i];
2059         }
2060
2061         for ( wxList::compatibility_iterator node = m_fileMenus.GetFirst();
2062               node;
2063               node = node->GetNext() )
2064         {
2065             wxMenu * const menu = (wxMenu *)node->GetData();
2066
2067             menu->SetLabel(m_idBase + i, GetMRUEntryLabel(i, pathInMenu));
2068         }
2069     }
2070 }
2071
2072 void wxFileHistory::RemoveFileFromHistory(size_t i)
2073 {
2074     size_t numFiles = m_fileHistory.size();
2075     wxCHECK_RET( i < numFiles,
2076                  wxT("invalid index in wxFileHistory::RemoveFileFromHistory") );
2077
2078     // delete the element from the array
2079     m_fileHistory.RemoveAt(i);
2080     numFiles--;
2081
2082     for ( wxList::compatibility_iterator node = m_fileMenus.GetFirst();
2083           node;
2084           node = node->GetNext() )
2085     {
2086         wxMenu * const menu = (wxMenu *) node->GetData();
2087
2088         // shift filenames up
2089         for ( size_t j = i; j < numFiles; j++ )
2090         {
2091             menu->SetLabel(m_idBase + j, GetMRUEntryLabel(j, m_fileHistory[j]));
2092         }
2093
2094         // delete the last menu item which is unused now
2095         const wxWindowID lastItemId = m_idBase + numFiles;
2096         if ( menu->FindItem(lastItemId) )
2097             menu->Delete(lastItemId);
2098
2099         // delete the last separator too if no more files are left
2100         if ( m_fileHistory.empty() )
2101         {
2102             const wxMenuItemList::compatibility_iterator
2103                 nodeLast = menu->GetMenuItems().GetLast();
2104             if ( nodeLast )
2105             {
2106                 wxMenuItem * const lastMenuItem = nodeLast->GetData();
2107                 if ( lastMenuItem->IsSeparator() )
2108                     menu->Delete(lastMenuItem);
2109             }
2110             //else: menu is empty somehow
2111         }
2112     }
2113 }
2114
2115 void wxFileHistory::UseMenu(wxMenu *menu)
2116 {
2117     if ( !m_fileMenus.Member(menu) )
2118         m_fileMenus.Append(menu);
2119 }
2120
2121 void wxFileHistory::RemoveMenu(wxMenu *menu)
2122 {
2123     m_fileMenus.DeleteObject(menu);
2124 }
2125
2126 #if wxUSE_CONFIG
2127 void wxFileHistory::Load(const wxConfigBase& config)
2128 {
2129     m_fileHistory.Clear();
2130
2131     wxString buf;
2132     buf.Printf(wxT("file%d"), 1);
2133
2134     wxString historyFile;
2135     while ((m_fileHistory.GetCount() < m_fileMaxFiles) &&
2136            config.Read(buf, &historyFile) && !historyFile.empty())
2137     {
2138         m_fileHistory.Add(historyFile);
2139
2140         buf.Printf(wxT("file%d"), (int)m_fileHistory.GetCount()+1);
2141         historyFile = wxEmptyString;
2142     }
2143
2144     AddFilesToMenu();
2145 }
2146
2147 void wxFileHistory::Save(wxConfigBase& config)
2148 {
2149     size_t i;
2150     for (i = 0; i < m_fileMaxFiles; i++)
2151     {
2152         wxString buf;
2153         buf.Printf(wxT("file%d"), (int)i+1);
2154         if (i < m_fileHistory.GetCount())
2155             config.Write(buf, wxString(m_fileHistory[i]));
2156         else
2157             config.Write(buf, wxEmptyString);
2158     }
2159 }
2160 #endif // wxUSE_CONFIG
2161
2162 void wxFileHistory::AddFilesToMenu()
2163 {
2164     if ( m_fileHistory.empty() )
2165         return;
2166
2167     for ( wxList::compatibility_iterator node = m_fileMenus.GetFirst();
2168           node;
2169           node = node->GetNext() )
2170     {
2171         AddFilesToMenu((wxMenu *) node->GetData());
2172     }
2173 }
2174
2175 void wxFileHistory::AddFilesToMenu(wxMenu* menu)
2176 {
2177     if ( m_fileHistory.empty() )
2178         return;
2179
2180     if ( menu->GetMenuItemCount() )
2181         menu->AppendSeparator();
2182
2183     for ( size_t i = 0; i < m_fileHistory.GetCount(); i++ )
2184     {
2185         menu->Append(m_idBase + i, GetMRUEntryLabel(i, m_fileHistory[i]));
2186     }
2187 }
2188
2189 // ----------------------------------------------------------------------------
2190 // Permits compatibility with existing file formats and functions that
2191 // manipulate files directly
2192 // ----------------------------------------------------------------------------
2193
2194 #if wxUSE_STD_IOSTREAM
2195
2196 bool wxTransferFileToStream(const wxString& filename, wxSTD ostream& stream)
2197 {
2198     wxFFile file(filename, _T("rb"));
2199     if ( !file.IsOpened() )
2200         return false;
2201
2202     char buf[4096];
2203
2204     size_t nRead;
2205     do
2206     {
2207         nRead = file.Read(buf, WXSIZEOF(buf));
2208         if ( file.Error() )
2209             return false;
2210
2211         stream.write(buf, nRead);
2212         if ( !stream )
2213             return false;
2214     }
2215     while ( !file.Eof() );
2216
2217     return true;
2218 }
2219
2220 bool wxTransferStreamToFile(wxSTD istream& stream, const wxString& filename)
2221 {
2222     wxFFile file(filename, _T("wb"));
2223     if ( !file.IsOpened() )
2224         return false;
2225
2226     char buf[4096];
2227     do
2228     {
2229         stream.read(buf, WXSIZEOF(buf));
2230         if ( !stream.bad() ) // fail may be set on EOF, don't use operator!()
2231         {
2232             if ( !file.Write(buf, stream.gcount()) )
2233                 return false;
2234         }
2235     }
2236     while ( !stream.eof() );
2237
2238     return true;
2239 }
2240
2241 #else // !wxUSE_STD_IOSTREAM
2242
2243 bool wxTransferFileToStream(const wxString& filename, wxOutputStream& stream)
2244 {
2245     wxFFile file(filename, _T("rb"));
2246     if ( !file.IsOpened() )
2247         return false;
2248
2249     char buf[4096];
2250
2251     size_t nRead;
2252     do
2253     {
2254         nRead = file.Read(buf, WXSIZEOF(buf));
2255         if ( file.Error() )
2256             return false;
2257
2258         stream.Write(buf, nRead);
2259         if ( !stream )
2260             return false;
2261     }
2262     while ( !file.Eof() );
2263
2264     return true;
2265 }
2266
2267 bool wxTransferStreamToFile(wxInputStream& stream, const wxString& filename)
2268 {
2269     wxFFile file(filename, _T("wb"));
2270     if ( !file.IsOpened() )
2271         return false;
2272
2273     char buf[4096];
2274     for ( ;; )
2275     {
2276         stream.Read(buf, WXSIZEOF(buf));
2277
2278         const size_t nRead = stream.LastRead();
2279         if ( !nRead )
2280         {
2281             if ( stream.Eof() )
2282                 break;
2283
2284             return false;
2285         }
2286
2287         if ( !file.Write(buf, nRead) )
2288             return false;
2289     }
2290
2291     return true;
2292 }
2293
2294 #endif // wxUSE_STD_IOSTREAM/!wxUSE_STD_IOSTREAM
2295
2296 #endif // wxUSE_DOC_VIEW_ARCHITECTURE